Document And Entity Information Statistical Measurement [Axis] Note To Financial Statement Details Textual Significant Accounting Policies Note 1 - Organization and Summary of Significant Accounting Policies Provision for (benefit from) income taxes ecd_NonRule10b51ArrTrmntdFlag Non-Rule 10b5-1 Arrangement Terminated [Flag] Note 2 - Discontinued Operations ecd_NonRule10b51ArrAdoptedFlag Non-Rule 10b5-1 Arrangement Adopted [Flag] Note 5 - Net Loss Per Share Trading Arrangements, by Individual [Table] Note 6 - Segment Information Material Terms of Trading Arrangement [Text Block] Note 1 - Organization and Summary of Significant Accounting Policies - Summary of Revenues Distribution by Geographical Area and Market (Details) Note 1 - Organization and Summary of Significant Accounting Policies - Schedule of Accounts Receivable, Net, Contract Assets, and Contract Liabilities (Details) Note 1 - Organization and Summary of Significant Accounting Policies - Summary of Deferred Revenues (Details) Note 2 - Discontinued Operations - Summary of Discontinued Operations (Details) Note 5 - Net Loss Per Share - Summary of Basic and Diluted Shares (Details) Minimum [Member] Note 6 - Segment Information - Schedule of Revenue by Segment (Details) us-gaap_ForeignCurrencyTransactionGainLossBeforeTax Gain (Loss), Foreign Currency Transaction, before Tax Note 6 - Segment Information - Schedule of Long-lived Assets by Geographic Area (Details) Statistical Measurement [Domain] Note 6 - Segment Information - Schedule of Revenue by Geographic Area (Details) Maximum [Member] Notes To Financial Statements Notes To Financial Statements [Abstract] Accounts payable, accrued payroll and employee benefits, and accrued expenses Cash flows from operating activities: Cash flows from investing activities: us-gaap_NetCashProvidedByUsedInOperatingActivities Cash Provided by (Used in) Operating Activity, Including Discontinued Operation Net cash used in operating activities Cash flows from financing activities: us-gaap_NetCashProvidedByUsedInInvestingActivities Net cash used in investing activities us-gaap_NetCashProvidedByUsedInFinancingActivities Net cash used in financing activities Accounts Receivable, Allowance for Credit Loss [Table Text Block] Accounts receivable and unbilled revenues, net Operating Segments [Member] Payroll and related Accounting Policies [Abstract] Segments [Domain] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue and Long-Lived Asset [Table] Noncurrent assets Nexty Electronics [Member] Represents Nexty electronics. Segments [Axis] Basic and diluted loss per share from continuing operations (in dollars per share) Loss from continuing operations Loss from continuing operations Income Statement [Abstract] us-gaap_UnrecognizedTaxBenefits Unrecognized Tax Benefits us-gaap_SharesOutstanding Balances (in shares) Balances (in shares) us-gaap_DiscontinuedOperationIncomeLossFromDiscontinuedOperationBeforeIncomeTax Loss before provision for income taxes us-gaap_NumberOfOperatingSegments Number of Operating Segments us-gaap_NumberOfReportableSegments Number of Reportable Segments Basic and diluted income per share from discontinued operations (in dollars per share) Segment Reporting [Text Block] Net income (loss) Net Income (Loss) Attributable to Parent Net loss Segment Reporting [Table Text Block] Preferred stock, 1,000,000 shares authorized, with par value of $0.001; no shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively. Adjustments to reconcile net loss to net cash used in operating activities: us-gaap_Liabilities Total liabilities us-gaap_LiabilitiesAndStockholdersEquity Total liabilities and stockholders’ equity us-gaap_IncreaseDecreaseInReceivables Accounts receivable and unbilled revenues, net Consolidation Items [Axis] us-gaap_AreaOfRealEstateProperty Area of Real Estate Property (Square Foot) Segment Reporting [Table] us-gaap_IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets Prepaid expenses and other current assets Sales and marketing Subsequent Event [Member] Consolidation Items [Domain] us-gaap_CostsAndExpenses Total costs and expenses Lease Contractual Term [Axis] Lease Contractual Term [Domain] Changes in operating assets and liabilities: North America [Member] Preferred stock, issued (in shares) Accounting Standards Update and Change in Accounting Principle [Table] Preferred stock, outstanding (in shares) Preferred stock, authorized (in shares) Income Tax, Policy [Policy Text Block] Office Spaced Leased in Karlavägen 100, Stockholm, Sweden [Member] Represents the office space leased in Karlavägen 100, Stockholm, Sweden. Preferred stock, par value (in dollars per share) Asia Pacific [Member] us-gaap_CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect Net change in cash and cash equivalents Effect of exchange rate changes on cash and cash equivalents Revenue, percentage Percentage of net revenue. 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Product and Service [Axis] License Fees [Member] License fees. neon_NumberOfCustomers Number of Customers The number of customers. Professional fees and IP Alps Alpine [Member] Alps Alpine. Hewlett-Packard Company [Member] Hewlett-Packard Company. Property and equipment, net Liquidity [Policy Text Block] The company's liquidity policy. Four Customers [Member] Four customers. Seiko Epson [Member] Seiko Epson. Commercial Vehicle OEM [Member] Commercial Vehicle OEM. Document Type neon_CommissionPaidPercentage Commission Paid, Percentage Commission paid, as a percent of the gross sales price per share. Operating expenses: Document Information [Line Items] Document Quarterly Report us-gaap_ConcentrationRiskPercentage1 Concentration Risk, Percentage Ladenburg Sales Agreement [Member] The Ladenburg Sales Agreement. IT and Industrial Customers [Member] The IT and Industrial customers Document Information [Table] Automotive Customers [Member] Automotive customers us-gaap_WeightedAverageNumberDilutedSharesOutstandingAdjustment Weighted Average Number of Shares Outstanding, Diluted, Adjustment (in shares) Entity Interactive Data Current Marketing and travel Marketing and traveling expenses. Commitments and Contingencies Disclosure [Text Block] Document Transition Report neon_CommonStockValueAuthorized Common Stock, Value, Authorized The value of common stock authorized. Statement [Line Items] us-gaap_OperatingExpenses Total operating expenses Other Foreign Countries [Member] Other foreign countries. Common stock, issued (in shares) Income (loss) per common share: Common stock, outstanding (in shares) Common stock, authorized (in shares) Basic and diluted – weighted average number of common shares outstanding (in shares) us-gaap_EarningsPerShareBasic Basic and diluted net loss per share??? (in dollars per share) Earnings Per Share, Diluted, by Common Class, Including Two-Class Method [Table] Common stock, 25,000,000 shares authorized, with par value of $0.001; 16,782,922 and 16,782,922 shares issued and outstanding at March 31, 2026 and December 31, 2025, respectively. 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receivable and unbilled revenues, net Other comprehensive income (loss): Statement of Stockholders' Equity [Abstract] Entity Address, City or Town Statement of Comprehensive Income [Abstract] Accumulated deficit Retained Earnings (Accumulated Deficit) Entity Address, Address Line One Statement of Cash Flows [Abstract] City Area Code neon_PolicyTable Local Phone Number Entity Address, Postal Zip Code Entity Address, Country us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent Total other comprehensive income (loss) Stockholders’ equity: Title of 12(b) Security Equity Components [Axis] Security Exchange Name Trading Symbol Operating lease obligations Class of Stock [Axis] Equity Component [Domain] Revenue [Policy Text Block] Equity [Text Block] AOCI Attributable to Parent [Member] Entity Common Stock, Shares Outstanding Additional Paid-in Capital [Member] Retained Earnings [Member] Earnings Per Share [Text Block] Foreign Currency Transactions and Translations Policy [Policy Text Block] Subsequent Event Type [Domain] JAPAN Subsequent Event [Table] Subsequent Event Type [Axis] Sale of Stock [Axis] Cost of revenues: Cost of revenues Common stock, par value (in dollars per share) Basis of Accounting, Policy [Policy Text Block] Sale of Stock [Domain] us-gaap_Assets Total assets Cash and cash equivalents Geographical [Domain] Geographical [Axis] Supplemental disclosure of cash flow information: Disposal Groups, Including Discontinued Operations, Disclosure [Text Block] Current liabilities: Net income Income from discontinued operations us-gaap_LiabilitiesCurrent Total current liabilities us-gaap_DisposalGroupIncludingDiscontinuedOperationOperatingIncomeLoss Operating income (loss) Customer [Axis] Contract liabilities Contract liabilities (deferred revenues) Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Revenue [Table Text Block] Depreciation and amortization Customer Concentration Risk [Member] SWEDEN us-gaap_DisposalGroupIncludingDiscontinuedOperationGrossProfitLoss Gross margin Revenue Benchmark [Member] Other Commitments [Table] Accumulated other comprehensive loss us-gaap_DisposalGroupIncludingDiscontinuedOperationRevenue Revenues Product [Member] Disposal Groups, Including Discontinued Operations [Table] Disposal Groups, Including Discontinued Operations [Table Text Block] Segment Reporting, Entity-Wide Information Not Provided as Part of Reportable Segment, Geographical Area, Long-Lived Asset [Table Text Block] General and administrative us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest Loss before provision for income taxes Organization, Consolidation and Presentation of Financial Statements Disclosure and Significant Accounting Policies [Text Block] Additional paid-in capital us-gaap_StockholdersEquity Total stockholders’ equity Balances Balances us-gaap_IncreaseDecreaseInContractWithCustomerLiability Contract liabilities Prepaid expenses and other current assets us-gaap_PaymentsToAcquirePropertyPlantAndEquipment Purchase of property and equipment Stock, Class of Stock [Table] UNITED STATES Concentration Risk Benchmark [Axis] Non-US [Member] Concentration Risk Benchmark [Domain] Current assets: Operating lease right-of-use assets, net us-gaap_AssetsCurrent Total current assets Geographic Concentration Risk [Member] ecd_Rule10b51ArrTrmntdFlag Rule 10b5-1 Arrangement Terminated [Flag] ecd_Rule10b51ArrAdoptedFlag Rule 10b5-1 Arrangement Adopted [Flag] Revenues Revenues us-gaap_GrossProfit Gross margin Commitments and contingencies (Note 4)